chore(client/macos): 清理延迟排查的诊断打点 + debug 注入(最终干净版)

延迟显示已修通。移除排查期的临时诊断:扩展侧 Log 客户端/klog 捕获、log.level=debug 注入、
diag 字段/setDiag;主 app StatsClient 每5帧的 dl/ul/urltest 打印;Dart 侧 [Stats]/[Ping] 打点。
保留全部修复:clash_api 注入取 urltest、sendProviderMessage 统计通道、/proxies history+active
缓存、共享广播流、_onStats 回退 effectiveNode、连接态跳过直连实测。

CURRENT_PROJECT_VERSION 52→53。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

client/macos/Runner/StatsClient.swift

@@ -20,7 +20,6 @@ final class StatsClient: NSObject {
     private let queue = DispatchQueue(label: "pangolin.stats.client")
     private weak var session: NETunnelProviderSession?
     private var timer: DispatchSourceTimer?
-    private var diagTick = 0 // 诊断:每 5 帧打一次 urltest,排查延迟为何不刷新
 
     // ── 生命周期 ────────────────────────────────────────────────
 
@@ -59,18 +58,8 @@ final class StatsClient: NSObject {
             try session.sendProviderMessage(Data("stats".utf8)) { [weak self] resp in
                 guard let self, let resp, !resp.isEmpty else { return }
                 guard let obj = (try? JSONSerialization.jsonObject(with: resp)) as? [String: Any] else {
-                    NSLog("[pangolin/stats] bad stats payload (%d bytes)", resp.count)
                     return
                 }
-                // 诊断:确认 urltest 延迟是否随统计帧一起到达(连接页延迟靠它)。
-                self.diagTick += 1
-                if self.diagTick % 5 == 0 {
-                    let urls = (obj["urltestResults"] as? [[String: Any]]) ?? []
-                    let pairs = urls.map { "\($0["tag"] ?? "?")=\($0["delayMs"] ?? -1)" }.joined(separator: ",")
-                    NSLog("[pangolin/stats] dl=%@ ul=%@ urltest[%d]=%@ diag=%@ klog=%@",
-                          "\(obj["downloadSpeed"] ?? 0)", "\(obj["uploadSpeed"] ?? 0)", urls.count, pairs,
-                          "\(obj["diag"] ?? "-")", "\(obj["klog"] ?? "-")")
-                }
                 self.emit(obj)
             }
         } catch {